Daily Kata # 1 - Get Middle

get-middle.clj

(defn get-middle [x]
      (if (odd? (count x))
        (subs x (Math/floor (/ (count x) 2.0)) (+ (Math/floor (/ (count x) 2.0)) 1))
        (subs x (- (/ (count x) 2.0) 1)(+ (/ (count x) 2.0) 1))
        ))

;; Better 

(defn is-even [s] (= 0 (mod (count s) 2)))
(defn mid [s] (int (Math/ceil (/ (count s) 2))))
(defn get-middle [s]
  (if (is-even s)
    (subs s (- (mid s) 1) (+ (mid s) 1))
    (subs s (- (mid s) 1) (mid s)))
  )

getMiddle.js

function getMiddle(s) {
  var str = s.split(""),index;
    if (str.length % 2 === 0) {
      index = str.length/ 2;
      return str[index-1] + str[index]
    } else {
      index = Math.floor(str.length/ 2)
      return str[index]
    }
}

function getMiddle(s)
{
  return s.substr(Math.ceil(s.length / 2 - 1), s.length % 2 === 0 ? 2 : 1);
}